A206844 Number of 6Xn 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal

3636, 13220496, 31871929292, 79716622309437, 200394014933364651, 503617001775793994676, 1266270368466567536724535, 3183935032870732412305270412

Offset

1,1

Comments

Row 6 of A206838

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=5
..2..2..0..1..3....1..3..2..2..0....2..0..3..0..2....3..1..3..3..0
..3..2..0..1..3....2..2..1..1..0....0..3..1..1..2....0..3..1..3..3
..1..1..1..0..3....1..1..0..2..1....0..3..0..1..0....2..0..1..3..0
..1..3..3..1..2....0..0..3..0..0....3..2..2..1..2....3..3..1..2..0
..0..2..2..1..2....1..1..1..3..3....1..1..3..2..0....3..0..1..3..2
..0..0..1..0..2....3..3..0..0..2....3..3..0..1..3....0..3..3..3..2

Crossrefs

Sequence in context: A287219 A232120 A232418 * A206836 A206898 A207288

Adjacent sequences: A206841 A206842 A206843 * A206845 A206846 A206847

Keyword

nonn

Author

R. H. Hardin Feb 13 2012

Status

approved